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Tar Heel politicking

From NBC/NJ's Carrie Dann and NBC's Mark MurrayObama is heavily favored in the May 6 North Carolina primary. And not surprisingly, the Clinton campaign has downplayed expectations there (just like Team Obama has downplayed expectations in Pennsylvania, West Virginia, and Kentucky).

But -- in a nod to the power of surrogates -- it's worth noting that the Clinton clan has visited the Tar Heel State more often than the Obama clan has since March 4.